gibbs



(N0 Mbde l y T. GIBBS. COMPRESSED AIR ENGINE.

1310604745. Patented May 31; 1898;

" ATTORNEY inventoii a, new and iisoiui limprovomeni in Tim to that of tho original air,

' off the mixturo of air and, gas ignited.

Comproooozi-Air Engines, of which the foiiow is mp fioa-iiom.

My im'omiioo. is & oompresseri-air engine in which fin-e woi'l-zin ouoz'gy io doi'iveii .i'rom compremsod air wiiioii drives the 011 over :2, part oi? the; stroke and is; silhseqno'miiy on; and allowed to oil-panel, and is int-1o duoed under & preasiime which may ho 'aixpw me the following; dofinito oyoio reoulizo: at, air is afimitiociai working" pressure and after driving the pilotom over: poi-Mon of tho stroke out off and iiion operoaos oxpanaivei r. See and, ga s ia admitted at pressu re higaer than tho-i of i-ho {air misting in the cylinder at the iimo of iis admissaion and before the Mower;-

sure in tho cy'iindoxhy expansion gholi have fallen "to that of the :i-imosphem. Home said gas may admiiiosi eifiiior heifers or M difier tho point of cut-off of tho oil, and the pain; of cut-off of the gasmoy either prior i0, coincident Wibii, or guiisequont to 11m point of air cut-oil; but tho and air am not mitiec'i simultmemsiy. Third; after the gas hm boon odmiitofl and after it has been out will To}? observed from this cycle aha oyiindex is moi; chargeiwith 5m and gas both oi? poi m'ivo i jwhioh acted by iii-3 rod in we ensi oi" rod G io journaied so srollei ii, which ociuoteii upon by the cam on shaft Said emu m oonstruoieil so as Lo open midi axiom; 35316 i; fling" immimiiter explained.

35 in accorianoo wi sh tho J is a source of inflammable gas 01 vzi'por muier pressure, such a3 a. flask or moorvoir in jwhioh the gas has previously beam com pressed "byony suitable means. ReservoirJ @ommunicatos-With valve-chest K, in whioii iffl waited a puppet-valve L which is providod wiii a iiGd carrying at its and a, roller N. Rollo? Nis acted upon by the com 0 on own 6 6o aha-fin (3 2L216 com 0 is constructed to (313611 and clo s the valve L in ocool'danco with tho timing he eimmftmr explained. i

'W him wivo L is open, the gm or vapor: I eon pass by a. duet i to a chamber Q, which 65' owns oi", B iimctiy into oyiinder A. in tho chamber Q is an eiootric igniting (levies S, ooimooioii in circuit and operated to igniize' the in said chamber at the qgropertime, also as hereinafter explained. Bfinailfiaom muniemiing Wii'L; oyiiiader A is a valve-chest T, in which. is soaked a puppet-valve U, which a, rod i carrying at its end a roller W. Holler W is acted upozi by com X on shaft; G, and mid cam is constmtcd toopen and clogs the valve L to permit or out 01f exhaust? from the cyiimtier'A in acoordonco with the timing horoimifier explained.

The operation and timing of the engine, which i9 here single-acting, are no i'o lows}: opens the Yfli'fil to aliow aimmdor "cz orkiog preiasmo to iiowirom resewiioil' D ohimi abopistozi. The piston then. begins} its a-imke. Cam 0 that opens; the gas-Valve 8 "in or aior that this may b is obvioufi that tho pressure of gas ieii. of the air, A ouficient omoom l ouch gas to heat the air after ex; pomzion'wiii iimi'ofox'o 'becausa tho gas is at ffi ii pressuro, onto? the cilzimber Q, in. .aifvory brief Lima, Gonooquonfly the cam 0 allow viii-v a L to close and so out off the ii"i?w9 mom i oiiows valve E to close and sorouiyoiii zho When, howegier, L116 VMVG oliooom than H10 91! operates expansively, i may iime after this point of out-off tho *"iy'be established 'i'iu'ough the ignitx my; dovm S and tho proviousiy-adnliiied gim igniieii, thus restoring tile-hem lost dozing L and allows the gas to tar ohambor Q from tho giio-z'esorvoir J;

occur, iiliiifjil- KOO . expansion. 0n the return stroke the exhaust- It will be obvious from the foregoing that while itis essential that air alone shall enter the cylinder at working pressure and so start the piston it is not essential that the gas shall enter prior to the point of cut-off of the air. It may be admitted after the point of cut-off when the air is at any desired pressure not substantially that of the atmosphere. Hence it will further be apparent that there may be considerable latitude in gas-pressure, in moment of gas admission, and in the time during which said admission continues, the last, of course, depending upon the differential betweenthe pressure in the cylinder and the pressure in the gas-reservoir. Obviouslyif the timing besuch that the period of gas admission is subsequent to the period of air outoff then so high a pressure in the gas-reservoir is not necessary as when the gas admission precedes the air cut-oil, both periods of admission being equal in'duration. On'the other hand, if the gas be at pressure superior to that of the original air then the period of admission taking place after air cut-off may be shorter in duration than if occurring prior thereto.

The term gas asherein used means any inflammable vapor or any inflammable fluid in the form of spray or other comminuted condition.

1. The combination of a motor, a source of air under Working pressure, a source'of gas or inflammable vapor under pressure, i alvcs respectively controlling the admission of said air and said gas to said motor and an i gniter; the said parts being so organized and timed that first air and. then gas are independently admitted to the cylinder and an explosion or ignition then caused to occur subsequent to the cut-off of the working air, substantially as described. 7

2. The combination of a motor, a source of air under working pressure, a source of gas or inflammable vapor under pressure, a valve controlling the admission of air to the motor, a valve controlling the admission of gas to the motor and an igniter; the parts being so or ganized and timed that gas wilLbc independently admitted into the cylinder when the air is at a'certain pressure therein' and subsequently ignited when said air is at a certain lower pressure, substantially as described.

3. The combination of a motor, a source 05 air under working pressure, a source of gas or inflammable vapor under pressure, a valve controlling the admission of air to the motor, a valve controlling the admission of gas to the motor and an igniter; the parts being so organized and timed that gas will be independently admitted into the cylinder before the point ofi cut-elf of the air and ignited subse quent to said point of cut-off, substantialiy LUCIUS "1. cross. Witnesses:

I. A. VAN WART, WM. H. SIEGMAL.

.as described. 

